发明申请
- 专利标题： HIGH PRESSURE LOW DENSITY POLYETHYLENE RESINS WITH IMPROVED OPTICAL PROPERTIES PRODUCED THROUGH USE OF HIGHLY ACTIVE CHAIN TRANSFER AGENTS
- 专利标题（中）： 具有通过使用高活性链转移剂生产的改进的光学性能的高压低密度聚乙烯树脂
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申请号： US13063960申请日： 2009-10-01
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公开(公告)号： US20110178253A1公开(公告)日： 2011-07-21
- 发明人: Teresa P. Karjala , Christopher R. Eddy , Mehmet Demirors , Wallace W. Yau , Sarat Munjal , Stefan Hinrichs , Jian Wang , Otto J. Berbee , Werner Zschoch , Cornelis J. Hosman , Lonnie G. Hazlitt
- 申请人： Teresa P. Karjala , Christopher R. Eddy , Mehmet Demirors , Wallace W. Yau , Sarat Munjal , Stefan Hinrichs , Jian Wang , Otto J. Berbee , Werner Zschoch , Cornelis J. Hosman , Lonnie G. Hazlitt
- 申请人地址： US MI Midland
- 专利权人： Dow Global Technologies LLC
- 当前专利权人： Dow Global Technologies LLC
- 当前专利权人地址： US MI Midland
- 国际申请： PCT/US09/59263 WO 20091001
- 主分类号： C08F110/02
- IPC分类号： C08F110/02 ; C08F2/01 ; C08F2/38
摘要：
Disclosed is an ethylene-based polymer with a density from about 0.90 to about 0.94 in grams per cubic centimeter, with a molecular weight distribution (Mw/Mn) from about 2 to about 30, a melt index (I2) from about 0.1 to about 50 grams per 10 minutes, and further comprising sulfur from about 5 to about 4000 parts per million. The amount of sulfur is also determined based upon the total weight of the ethylene-based polymer. Also disclosed is process for making an ethylene-based polymer which includes the steps of splitting a process fluid for delivery into a tubular reactor; feeding an upstream process feed stream into a first reaction zone and at least one downstream process feed stream into at least one other reaction zone, where the process fluid has an average velocity of at least 10 meters per second; and initiating a free-radical polymerization reaction.
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